Furnace for volatile metals.



` Patented Aug. 24. 1909.

2 SHEETS-SHEET 1.

W. HUMMEL. FURNAGE FOR VOLATILE METALS. APPLIpATIoN FILED Nov. 3o, 190s. 932,279.

Inz/enfor' W. HOMMEL. f

FURNACE FOR VOLATILE METALS.

, APPLICATION FILED NOV.30, 1908. 932,279'. r Patented Aug. 24. 1909.

2 SHEETS-sum1 2.

JLMCLMLL- y MW WM w wir Q v 932,279 v bers and vput into communication with the stack, or may be cut off from the stack and coal is added thereto.

^ combustion of the coalssupphes the prelimiput into 4communication only with the zinccondensing chambers. v f

The normal operation lof the apparatus is as follows :`-,Ther,e is one charge of ore inthe blowing hearth. Another charge is banked up in the furnace chamber between the blow- I ing h'earth and they ilue, and other .charges are placed in the upperchamber vabove the partition, means being provided for feeding the charges into the up er chamberand for shifting them along bot chambers and from nary heat and reduces the zmc tothe me'- tallic form' when it volatilizes and is burned above't e blowinghearth ltof form zinc oxid. At first the carbonace'ous gas is. evolved from the coal, and for`this 'reason 1*' the furnacechamber is put into communication with the stack, but when the zinc is evolved and ig nited to form zincoxid, the furnace-cham-l ber is put into communication with the condensing chambers. Each time the blowing lhearth is re'charged, a charge from the upper chamber is brought down 1nto the furnacevchamber and the charges in the upper chamto leave roomn for aV ber are shifted alon fresh charge to be fe in through the charg# ing o enin. y i

A oor 1s providedm the upper` part of the furnace above the level of the horlzontal partition K so that a rabble maybe inserted which to work the charges from the upper c amber L into f the lower chamber y earth bymeans of a rabble inserted through the door in the front of `chamber`A shown in JFiglFand situated above the blowing., *l

hearth. y l* A This invention has been described in its apphcatlon to the treatment of zinc ore, but

p it 1s to be understood that it is applicable to i lWitnesses:

any other ore especially 'to complex ores.' 50

Thematerial remaining on the blowin hearth becomes sintered or agglomerate and the furnace according to thls mvention is suitablevfor sintermg o'r agglomerating certain char es s uch as copper pyrites.

- What' claim as m -invention and desire to secure b Letters atent is:-

1. In a lowing furnace the combinationofJ a furnace-chamber, and a blowing hearth.

consisting of a rectangular trough rotatable' 60 on 'a horizontal axis, and a horizontal grate in the trough through which. gas' can be blown under pressure. x

'2. In a blowing furnacelthe combination i of a furnace-chamber, and =a blowing hearth consisting of rectangular trough, hollow trunnions sup orting the trough and connected to a compressed-air supply, and a horizontal rate -in the trough through-which air can be lown under pressure; 703, 3. In a blowing furnace the lcombinatlon of a. furnace-chamberfa blowing .hearth insaid chamber consisting of -a rectan lar trough rotatable on a horizontal axis, a orizontal artitionin the furnace-chamber 75 above w ich is formed a chamber in which the material to be fed to the blowing hearth is heated b the gas esca ing therefrom.-

4. In a bl p rectangular trough rotatable on a horizontal i axis, two ues'at 'the end of theffurnaceowingfurnaceforvolatilizin zinc and burning the same to form zincoxi the 80 vcombination of a furnace-chamber, a blow-l` ing hearth in said vchamber. consistingI of a chamber one leading to the zinc oxidfcon- `l densing a paratus and the other leadingto a stack, an a door hinged at the junction ofl the ilues by which the furnace-chamber may be put into communication with either 0f the Similarly the charge is movedfrom the rear y portion of the chamber A on to the blowing two subscribing witnesses. d

LY vsloLDisiciAR` Henner.;

JEEacir W. H'ciunison.I;A J. B. Buss. 

